Oracle: Validate input data with given data structure rules - oracle

Question

I have table called data rules. Its given below with some explanation.
Data|GroupNum|GroupType|GroupMinOcc|GroupMaxOcc|DataStatus|DataMinOccWithinGroup|DataMaxOccurenceWithinGroup|IDX
ABC |GroupA |Mandatory| 1 | 1 | Mandatory| 1 | 1 |1
DEF |GroupB |Mandatory| 1 | 1 |Mandatory | 1 | 1 |2
GHI |GroupC |Mandatory| 1 | 1 |Mandatory | 1 | 1 |3
JKL |GroupD |Optional | 0 | 1 |Optional | 0 | 1 |4
FFF |Group1 |Optional | 0 | 1 |Mandatory | 1 | 1 |5
RRR |Group1 |Optional | 0 | 1 |Optional | 0 | 2 |6
MMM |Group2 |Optional | 0 | 2 |Mandatory | 1 | 1 |7
PPP |Group2 |Optional | 0 | 2 |Optional | 0 | 1 |8
CCC |Group3 |Optional | 0 | 2 |Optional | 0 | 2 |9
SSS |Group4 |Mandatory| 1 | 2 |Mandatory | 1 | 1 |10
TTT |Group4 |Mandatory| 1 | 2 |Mandatory | 0 | 2 |11
Let me explain you this data rules first.
1) A group can have multiple data records
Here as you can see GroupA is having only ABC data and Group 1 is having FFF and RRR data.
2) A group can be mandatory and optional. It means a group will appear definitely if its mandatory. Secondly If its mandatory, then its data records also having mandatory and optional status.
For example: Check group4
This group is mandatory and its First data SSS is also mandatory. It means this group is mandatory and when it will occur this data should also occur. But second data in this group is TTT which is optional. No matter group is mandatory, but this data is optional inside mandatory group so it can occur from 0 to 2 times
Lets Say this group occur two times..It would look like this
Group4 Example: Valid
SSS
TTT
TTT
SSS
TTT
Invalid Group4 occurrence
SSS
SSS
TTT
TTT
TTT
Its invalid because in second occurrence of group TTT is occurred 3 times but it should not exceed from 2
3) If group is optional it can be appear or cannot be.
So As you can see, GroupD, Group2 and Group3 are optional So after GroupC directly Group4 data also can come in input data..like this
ABC
DEF
GHI
SSS
TTT
I want to capture exact IDX number from Data rules table from their respective groups only, If input data dont follow the rules mentioned in data rules table.
For example 1st Input Data Example
ABC
DEF
GHI
JKL
JKL
SSS
As you can see here JKL is optional data in optional group. But if this optional group occurs this JKL should come only one time. But it came twice. So I want return that IDX number 4.
2nd Data Example.
ABC
DEF
GHI
TTT
Here it should return IDX number 10. Because from mandatory group4 mandatory data SSS is missing and in data rules its IDX is 10
3rd Example
ABC
DEF
GHI
SSS
SSS
TTT
In this also IDX return for SSS should be 10. Because Its occurred twice. And as you can see in data rules whole Group4 can repeat one time only and whenever it will occur SSS will come only one time. SO that's a error
Many errors can occur same time as well. SO IDX number needs to returned from their respective group data only from data rules table.
In input data, Only one column will come with data records only.
Note: Group data will appear only in series like mentioned in data rules from top to bottom. And can be appeared or not on the basis of definition mentioned in data rules table.
Any suggestions..how can I achieve this ?